Weigel

Delaware Republicans are up with a robocall from Christine O'Donnell's 2008 campaign manager Kristen Murray, who's been talking to reporters about how she left the campaign angry that O'Donnell was paying personal expenses with campaign funds.

"She wasn't concerned about conservative causes," says Murray. "She just wanted to make a buck!"

Indeed, Castle's closing argument against O'Donnell -- for two weeks -- has been about personal flaws and electability. It's what he should be using, and it has pulled a nice swath of conservative opinion-makers over to his side.